Speaking from experience, an ACF7P is, by today's standards, an excessively mediocre cooler. It does a pretty good job of coping the dual core processors and their lower TDP, but if you have a quad core, the Hiper 212+ is the bare minimum you should be using.
However i wasnt planning on increasing the overclock on my core i7 2600k @4ghz i was simply asking if there would be any noticeable improvement inperformance vs a core i5 2500k overclocked @ 4.8ghz or if it would be not noticeable?
Why in the world would you buy downmarket from the 2600K and go to the 2500K? You can OC a 2600K to 4.9 GHz. Now, the problem is that some processors can take the OC, and some can't. But that is due to individual characteristics of the chip. If, due to defects on the 2600K it can onlyy be OC'd to 4.0 GHz, you have a defective chip (at least from the aspect of over clocking).
The other major hardware player in OC'ing is the motherboard. Some mobos OC well, and others don't. I have an ASRock P67 Extreme6 and it OC's like a champ, but I have run accross threads that bemoan the weak overclocking of ASRock mobos. The difference in mobos of the same model is dependent on the individual chips.
I guess that your system is limited by the mobo rather than the CPU. The 2600K should be able to OC at about 100 MHz over a 2500K.
Basically I bought a pre built system which I will list full spec below. The system is being delivered next week.
I was basically just wondering if I should of gone for the core i5 version overclocked @4.8ghz which I probably should of looking back and I just wanted to know if I would of acheived better performance on the core i5 @ 4.8ghz.
The company offered a overclock on the core i7 of either 4ghz / 4.6ghz and 4.9ghz
I decided to go for the 4ghz due to my budget as there was no charge for the overclock but the higher the overclock the higher the price of the cpu cooler needed.
Windows Home Premium 64 Bit OS
AVG Antivirus Free Edition
Cooler Master Elite 430 case
Additional 120mm Blue LED case cooling fans fron & rear
Intel Core i7 2600k Overclocked to 4ghz
Arctic Cooling Freezer 7 Pro Rev 2 CPU Cooler
Asus P8Z68-V LE motherboard
8 GB Corsair PC3 -12800 1600MHz DDR3 Memory (2 x 4gb sticks)
AMD Radeon HD 6970 2048MB (Asus EAH6970)
40GB Corsair Force SSD (this is used in SSD caching to boost performace only 1 hard drive is visable)
1000GB 7200RPM Hard Drive
SSD Caching Configuration
Samsung Blu Ray Rom / DVD RW Combi Drive
Sony 24 x DVD RW Drive
Corsair Ultra Low Noise 600W PSU
23" LG IPS236V - Monitor
Microsoft Sidewinder X6 Keyboard
Microsoft Sidewinder X8 Mouse
Hercules XPS 101 2.1 Sound System